Valve



V. KASTNER Nimm` 17', 192s,

MOTOR VALVE Filed Oct. 8, 1924 fy-f fz-yz Patented Mar. 17., 1925.

narran. e

VTIKTOR, KASTNER, OF AACHEN, GERMANY.

MOTOR' VALVE.

applic-asien nice, october s; 1924., sen-n 7.424801;

To aZZ whom t may con-cern.'

Be it known that LL Vnr'ron Kasrnnr., a

citizen of Greninany,A residing, aty Aachen. No. 20; laehstrassen Rhenlsh Prussia, Gerina-nv7- haveinventect certain newand use-I ful Improvements; Motorilalves; and I do, herebyl decla-re; the following to be; @fully clear, and exact deseriptcn. of the inven-Y tions sueltas .willi enable Others ska1-leljiniV the; artto. which .itiapp.erta-ins, te make and@` cylinder by means of SGtrew bolts fastened to,k

the, cylinder and springs which, .Olli the one hand, bear against the nnte; of; the. said screw bolts and7 on the other hand,against the. valve cages themselves.

The invention hasfor its object to provide a valve arrangement of the kind stated which is of a simple, compact and durable construction and which has springs-exerting a strong pressure on the valve cages so as to press them uniformly and tightlyr against their seats in the cylinderTthereby preventing a jamming of the cages in the cylinder b-ores receiving them. Another object of the invention is to dispense with all fastening anges on the valve cages so that the same may be made assimple bodies of revolution the circumference of which may be easily worked upon and with'which, when inserted in the.y cylinder, there will arise no accumulations of heat which otherwise would entail a warping of the valve cages and seats, thereby rendering the valves leaky. l

These objects are essentially attained by using laminated or plate springs for pressing the valve cages into the bores off the cylinder receiving them, said springs being arranged so that they connect the fastening bolts with each other and, while having an opening for the movement therethrough of the valve stem and spring, engage the valve cages centrally, for'v instance through the intermediary of spherical supporting faces.

According to the invention these spherical supporting faces are preferably formed by two diametrically opposite projections of a knife-edge or ball-like shapewhich are carried either by the laminated springs or the valve cages in a vertical position with rela-tien tot the springs, and'vbyf ineansi et which` orf atwhich, as ,thel case 1nay be,v the Springs engage the valve,` cages in tlieway @Its.ealeliearn.s.

All; embodiment @tithe subject-matter et the nventien. appleenibustien is illustrated in tlieacceinpanyine dravngfin which: v

."Figule.` Lis .partial longitudinal. section 'thrcngh' a cylinder-Ot thelfngine with a valve according" te the inventien, Eig. 2i Carrespendingf tcp plain and Figi.y 3 is a corresponding side-elem tion. Referring-nente tlle drawing, it, will be seen that..y thel valve lise fis Y shittably guided in the cage c weleens-@fthe sternx .Zh The cage; e is leeselyz lnenntcd 'in bore 720i the CylinderP ef which y bene Aentends transverselv Withrelatienrto the Channel; Cl,

Wllclilnayhbe eitherltlie intake Q1 enlel'anstl chain-rel, rvesneetivelinef thecylnder c. rEhe cage has a lower hollow'portion which constitutes at its end a seat g for the valve disc a. It is besides provided with an outer di@ toy: internal'.

packing surface Z1, by which it rests on a corresponding seating face formed by' the valve opening of the cylinder. The lower hollow space of the cage c is in communication with the channel @Z by means of openings 1,' pro-vided in the outer wall of the cage. The upper end of the cage c vwhich extends beyond the cylinder is yprovided at its outer annular edge withtwo diametrically opposed cam-like projections Zc ron which bears a multiple plate spring Z. This spring is held in position by two stud bolts n screwed l)into the cylinder. The plate spring Z has a central opening through which passes the valve spning 0 which bears by its lower end againstl the cage c; The cage c has the shape of a ribless'body of revolution.; At vits lower end the cage c is provided with a guiding extension p which tapers in the direction towards the valve disc a and extends to a point near the latter.y The plate spring Z constantly presses the cage c into the bore f so as to cause its outer packing face ZL to be always tightly seated on the corresponding seating face formed by the valve opening of the cylinder. This will also be the case if, upon the cylinder and the cage getting heated to a wardly. The cage, owing to its peculiar' shape, favors and accelerates the delivery of heat from the valve disc and stern to the cylinder and its water jacket.

Having thus described my invention, what I claim as newand desire to secure by Letters-Patent, is

l. ln a motor the combination with the cylinder, of a valve, a valve cage mounted in a bore of the cylinder and yieldably pressed against its seat by means of screw bolts and springs bearing on. the one hand against nuts of the said bolts and on the other hand against i the cage, the said springs consisting of plate springs connecting the saidv screw bolts with each other, a central opening in the plate springs for the passage therethrough of the valve stem and valve spring, and means underneath the plate springs having bearing edges through which the plate springs act centrally on the valve cage.

2. ln a motor the combination with the cylinder, of a valve, a valve cage mounted in a bore of the cylinder and y'ieldably pressed against its seat by means of screw bolts and springs bearing on the one hand against nuts of the said bolts and on the other hand against the cage, the said springs consisting of plate springs connecting the said screw bolts with each other, a central opening in the plate springs for the passage therethrough of the valve stern and Ivalve spring, and diametrically opposite projections on the valve cage standing vertically with relation to and forming bearing edges for the plate springs so as to enable the springs to act on the valve cage by engaging the said bearing edges like scale-beams. Y

3. In a motor the combination with the cylinder, of a valve, a valve cage mounted in a bore of the cylinder and yieldably pressed against its seat by means of screw bolts and springs bearing on the one hand against the -nuts of the said bolts and on the other hand against the cage, the cage being formed as a body of revolution and the said springs consisting of plate springs connecting the said screw bolts with each other, a central opening in the plate springs for the passage therethrough of the valve stein and valve spring, and means underneath the plate springs having bearing edges through which the plate springs act centrally on the valve cage.

In testimony whereof l have signed my name to this specification.

VIKTOR KASTNER. 

